<template>
	<div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120" v-model="msg"></textarea>
    <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
        <div class="cmt-title">
          	第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | dateFormat }}
        </div>
        <div class="cmt-body">
          {{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}
        </div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>

<script>
export default {
	data(){
		return {
			time:new Date().getTime(),
			msg:'',
			comments:[
				{add_time:this.time,user_name:'高成彬',content:'我们生活在北京'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在北京'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在北京'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在北京'}
			],
			comments2:[
				{add_time:this.time,user_name:'高成彬',content:'我们生活在济南市'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在济南市'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在济南市'},
				{add_time:this.time,user_name:'高成彬',content:'我们生活在济南市'}
			]
		}
	},
	props:['id'],
	watch:{
		comments:function(val){
			this.comments = val
			console.log(val)
		}
	},
	methods:{
		postComment(){
			var cmt = {
        user_name: "匿名用户",
        add_time: Date.now(),
        content: this.msg.trim()
      };
			this.comments.unshift(cmt);
      this.msg = "";
		},
		getMore(){
			this.comments=this.comments.concat(this.comments2)
		}
	}
}
</script>

<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>